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-rw-r--r--Lib/test/test_urllibnet.py19
1 files changed, 9 insertions, 10 deletions
diff --git a/Lib/test/test_urllibnet.py b/Lib/test/test_urllibnet.py
index 20efca6..b6888f3 100644
--- a/Lib/test/test_urllibnet.py
+++ b/Lib/test/test_urllibnet.py
@@ -124,16 +124,15 @@ class urlopenNetworkTests(unittest.TestCase):
else:
# This happens with some overzealous DNS providers such as OpenDNS
self.skipTest("%r should not resolve for test to work" % bogus_domain)
- self.assertRaises(IOError,
- # SF patch 809915: In Sep 2003, VeriSign started
- # highjacking invalid .com and .net addresses to
- # boost traffic to their own site. This test
- # started failing then. One hopes the .invalid
- # domain will be spared to serve its defined
- # purpose.
- # urllib.urlopen, "http://www.sadflkjsasadf.com/")
- urllib.request.urlopen,
- "http://sadflkjsasf.i.nvali.d/")
+ failure_explanation = ('opening an invalid URL did not raise OSError; '
+ 'can be caused by a broken DNS server '
+ '(e.g. returns 404 or hijacks page)')
+ with self.assertRaises(OSError, msg=failure_explanation):
+ # SF patch 809915: In Sep 2003, VeriSign started highjacking
+ # invalid .com and .net addresses to boost traffic to their own
+ # site. This test started failing then. One hopes the .invalid
+ # domain will be spared to serve its defined purpose.
+ urllib.request.urlopen("http://sadflkjsasf.i.nvali.d/")
class urlretrieveNetworkTests(unittest.TestCase):